This standard specifies the requirements, test methods, inspection rules and labeling, packaging, storage, transportation and shelf life requirements for feed raw materials hydrolyzed feather meal. This standard applies to hydrolyzed feather meal as feed raw material obtained from fresh, non-deteriorated and non-polluted poultry feathers through hydrolysis (enzymatic hydrolysis acid hydrolysis alkaline hydrolysis high temperature and high pressure hydrolysis , drying and crushing.